USBF_EP0_SETUP_INT
sts = ep0->status & (USBF_EP0_SETUP_INT | USBF_EP0_IN_INT | USBF_EP0_OUT_INT |
if (!(sts & USBF_EP0_SETUP_INT))
sts &= ~USBF_EP0_SETUP_INT;
if (!(sts & (USBF_EP0_STG_END_INT | USBF_EP0_SETUP_INT)))
if (!(sts & (USBF_EP0_STG_END_INT | USBF_EP0_SETUP_INT)))